QSC K12.2 is a 12-inch, 2000-watt powered loudspeaker designed to deliver exceptional sound quality and versatility for a wide range of applications. With its powerful Class-D amplifier, advanced DSP processing, and rugged construction, the K12.2 is ideal for live sound reinforcement, DJing, and playback of recorded music. It features a 12-inch woofer and a 2-inch compression driver, providing a frequency response of 45 Hz to 20 kHz. The K12.
QSC K12.2 is a 12-inch, 2000-watt powered loudspeaker designed to deliver exceptional sound quality and versatility for a wide range of applications. With its powerful Class-D amplifier, advanced DSP processing, and rugged construction, the K12.2 is ideal for live sound reinforcement, DJing, and playback of recorded music. It features a 12-inch woofer and a 2-inch compression driver, providing a frequency response of 45 Hz to 20 kHz. The K12.
K.2 SERIES LOUDSPEAKERS
application guide
Live Bands
K.2 SERIES LOUDSPEAKERS
Rev A May 2017
K.2 APPLICATION GUIDE— Live Bands 2
SINCE THEIR INTRODUCTION IN 2009, K FAMILY LOUDSPEAKERS HAVE BECOME THE GO-TO FAVORITE PRODUCT FOR
PROFESSIONAL AUDIO USERS MORE THAN A MILLION TIMES OVER. CONTINUING THAT TRADITION, THE QSC K.2 SERIES
IS QUITE SIMPLY THE “NEXT STANDARD” IN POWERED LOUDSPEAKERS.
THIS APPLICATION GUIDE IS DESIGNED TO OFFER YOU A FEW EXAMPLES OF HOW TO UTILIZE THE K.2 SERIES IN COMMON
MUSICIAN AND BAND SITUATIONS. WHILE EACH INDIVIDUAL OR GROUP’S NEEDS MAY VARY, THIS GUIDE SHOULD SERVE
AS A GOOD STARTING POINT ON HOW TO CONFIGURE AND DEPLOY THESE PRODUCTS IN YOUR APPLICATION. THERE
ARE ALSO MANY OTHER ASSETS AVAILABLE TO YOU ONLINE AT QSC.COM INCLUDING VIDEOS, TECHNICAL DOCUMENTS
AND MORE TO HELP YOU GET THE MOST FROM YOUR QSC PURCHASE. WE HOPE YOU TAKE ADVANTAGE OF EVERYTHING
AVAILABLE AND WISH YOU A MOST SUCCESSFUL AND ENJOYABLE EXPERIENCE WITH YOUR K.2 SERIES.
ONE FINAL NOTE: DON’T FORGET TO REGISTER YOUR K.2 SERIES ONLINE AT QSC.COM TO RECEIVE OUR FREE GLOBAL
6-YEAR EXTENDED WARRANTY. WHILE YOU’LL PROBABLY NEVER USE IT, IT
ADDS AN ADDITIONAL LEVEL OF CONFIDENCE THAT YOUR PURCHASE WILL
DELIVER LASTING PERFORMANCE NIGHT AFTER NIGHT, YEAR AFTER YEAR.
6
YEAR
WARRANTY
with
Product
Registration
K.2 APPLICATION GUIDE— Live Bands 3
WHAT’S NEW
Let’s look at the inputs on the K.2 loudspeakers. They’re still somewhat familiar to the K user, but updated a bit. As with the
legacy K series, Input A again can be mic or line level, but Input B now can be either a line level input or a high-Z one suitable
for musical instruments that have passive magnetic or piezo pickups. That’s right—the K.2 Series loudspeakers can be used as
guitar or bass combo amp, and they won’t load down the instrument like a regular mic or line input would. Input C is a stereo-
summed-to mono channel with a 3.5 mm stereo jack, suitable for playback from portable digital audio devices such as phones,
MP3 players, etc.
The three inputs each have their own gain knob and get mixed down to provide signal for the digital signal processing (DSP) and
class D amplification stages. A line-level summed output provides a means to send the mixed signal on to other loudspeakers or
other devices.
The biggest advance is in the DSP capabilities of the K.2 loudspeakers. In addition to voicing and protection duties, the K.2
Series DSP offers an array of user-configurable parameters that include EQ, delay, and presets. Yes, presets.
DEFAULT
The standard voicing of the K.2 speaker
* LIVE
A voicing for live music reinforcement that lowers and balances frequencies that can be prone
to feedback in a live mix.
* LIVE BRIGHT
A voicing for live music reinforcement that offers slightly more high end than the “Live” voicing.
DANCE
A voicing that focuses on high-end clarity and low end extension, primarily for Dance/Pop/Hip
Hop/etc music.
* STAGE MONITOR 1
A voicing for using a stage monitor with a microphone that lowers and balances frequencies
that can be prone to feedback in a monitor mix.
* STAGE MONITOR 2
A voicing for using a stage monitor without a microphone (such as a drum or keyboard monitor)
that offers more low frequency extension than Stage Monitor 1.
ACOUSTIC GUITAR/VOX
A voicing for a vocal mic plugged into input A, and an acoustic guitar plugged into channel B
that lowers and balances frequencies prone to feedback between those two input sources.
* BASS AMP
A voicing optimized to provide performance similar to that of a combo bass amplifier.
HAND MIC
A voicing that lowers and balances frequencies that can be prone to feedback with common
handheld dynamic microphones when used without a mixer.
HEAD MIC
A voicing that lowers and balances frequencies that can be prone to feedback with common
headset microphones when used without a mixer.
STUDIO MON
A voicing that provides a more balanced overall speaker response with deeper extension to be
used as a nearfield or studio monitor for mixing.
K.2 loudspeakers have 11 factory presets so
you can quickly dial in a collection of settings
tailored to a certain application.
* PRESETS FEATURED IN THIS APP GUIDE
K.2 APPLICATION GUIDE— Live Bands 4
The K.2 Series loudspeakers also offer four bands of user-adjustable EQ:
Up to 100 ms of delay.
80, 100, or 125 Hz high-pass filtering for use with a subwoofer.
HIGH
0 to -6 dB 1–10 kHz Shelving
EQ1
0 to -6 dB 50 Hz–20 kHz Q 0.4-4
EQ2
0 to -6 dB 200 Hz–20 kHz Q 0.4-4
LOW
0 to -6 dB 100-500 Hz Shelving
Input A select:
orMIC LINE
Input B select:
orHI-Z LINE
Factory Preset select:
DEFAULT
LIVE
LIVE BRIGHT
DANCE
STAGE MONITOR 1
STAGE MONITOR 2
AC GUIT/VOX
BASS AMP
HAND MIC
HEAD MIC
STUDIO MON
Settings select:
SAVE SCENES
RECALL SCENES
LED
CONTRAST
FACTORY RESET
Delay select:
to0 ms 100 ms
in 0.5 ms increments from 0 to 10;
in 1 ms increments from 10 to 100
High
0 to -6 dB 1–10 kHz Shelving
EQ1
0 to -6 dB 50 Hz–20 kHz Q 0.4–4
EQ2
0 to -6 dB 200 Hz–20 kHz Q 0.4–4
Low
0 to -6 dB 100–500 Hz Shelving
EQ select: orIN OUT
Sub menu select:
NO SUB
80 HZ
100 HZ
125 HZ
K.2 APPLICATION GUIDE— Live Bands 5
SMALL ACOUSTIC BAND
A four-piece folk/acoustic band utilizes all K8.2 loudspeakers for their PA mains and monitors. Elbow room is at a premium on
the shallow stages they often play on, so the bass player goes direct into the digital mixer. The front wedge is set to the Stage
Monitor 1 preset to reduce the likelihood of feedback. The bassist and conga player don’t have vocal mics and therefore their
wedge uses the Stage Monitor 2 preset.
TECH REQUIREMENTS:
Two vocals—one male, one female
Two acoustic guitars (direct in), electric bass (direct line out from bass amp), high and low congas (both miked)
Mains:
Two K8.2 loudspeakers [preset Live; no sub]
Monitors:
Vox duo + acoustic guitars: K8.2 [preset Stage Monitor 1]
Bass + congas: K8.2 [preset Stage Monitor 2]
Preset:
STAGE MONITOR 2
LINEIn A:
K8.2
K8.2
TouchMix -8
™
Preset: LIVE
LINEIN A:
K8.2
Preset: LIVE
LINEIN A:
K8.2
Preset:
STAGE MONITOR 1
LINEIn A:
LR
1 2
L R
1
2
Aux Out
Main Out
K.2 APPLICATION GUIDE— Live Bands 6
ROCK QUARTET
Guitar, bass, drums, and keys are a popular band format. The lead guitarist also handles most of the lead vocals, with the
bassist and keyboardist helping on background and occasional lead. They rely on two K10.2 tops and a KS212C Cardioid Sub
for the mains. The guitarist and keyboardist are both vocalists as well and use K8.2 wedge monitors set to the Stage Monitor 1
preset. The drummer uses a K10.2 as a wedge monitor with the Stage Monitor 2 preset, and on the backline the bassist uses a
K10.2 as a stage amp.
TECH REQUIREMENTS:
Lead guitarist/vocalist
Lead guitarist’s amp is miked
Bassist/background vocalist
Electronic keyboardist (direct in) /background vocalist
Full drum kit, fully miked.
Mains:
Two K10.2 loudspeakers [preset Live; sub 80 Hz]
KS212C Cardioid Sub [low-pass 80 Hz]
K10.2
KS212C
Cardioid Sub
Preset: LIVE
LINEIn A:
SUB 80 Hz
K10.2
Low-pass: 80 Hz
In A, pass through to left top
In B, pass through to right top
TouchMix -16
™
LR
1 2
3
Preset: LIVE
LINEIn A:
SUB 80 Hz
Preset: STAGE MONITOR 1
LINEIn A:
K8.2
Preset: STAGE MONITOR 1
LINEIn A:
K8.2
Preset: STAGE MONITOR 2
LINEIn A:
K10.2
L
R
L
R
1
2
3
K10.2
Preset: BASS AMP
HI-ZIn B:
L R
Monitors:
Guitarist/Lead vocalist: K8.2 [preset Stage Monitor 1]
Drums: K10.2 [preset Stage Monitor 2]
Keyboards/BG vocals: K8.2 [preset Stage Monitor 1]
Backline:
Bass: K10.2 [preset Bass Amp]; Mix Out to mixer, for mains
and monitors
Aux Out
Main Out
K.2 APPLICATION GUIDE— Live Bands 7
LARGE BAND
This band comprises a lead vocalist accompanied by guitar, bass, keyboards, drums, and a four-piece horn section. For mains
they use two K12.2 tops fed from the mixer’s left and right main outputs plus two KW181 subwoofers fed from a mixer aux
output; to give the horns more punch the mains are set to the Live Bright preset. The lead vocalist and guitarist use in-ear
monitors but the rest of the band use K8.2 loudspeakers as wedges; the keyboardist‘s, bassist’s, and drummer’s monitors use
the Stage Monitor 2 preset, while the horn section use Stage Monitor 1 to reduce the risk of feedback.
Lead vocal plus lead guitarist/vocalist, both on in-ears
Lead guitarist’s amp is miked
Electronic keyboards, direct in
Full drum kit, fully miked.
Trumpet
Trombone
Saxes and flute
Saxes
Mains:
Two K12.2 loudspeakers [preset Live Bright; sub 100 Hz]
Two KW181 subwoofers [built-in low-pass at 100 Hz]
TECH REQUIREMENTS:
Monitors:
Drums: K8.2 [preset Stage Monitor 2]
Keyboards: K8.2 [preset Stage Monitor 2]
Trumpet + Trombone: K8.2 [preset Stage Monitor 1]
Reeds 1 + Reeds 2: K8.2 [preset Stage Monitor 1]
Bass: K8.2 [preset Stage Monitor 2]
Backline:
Bass: K10.2 [preset Bass Amp]; Mix Out to mixer, for
mains and monitors
TouchMix -30
™
Preset: STAGE MONITOR 2
LINEIn A:
K12.2
KW181 Sub
Preset: LIVE BRIGHT
LINEIn A:
SUB 100 Hz
K12.2
K8.2
In A
K10.2
Preset: BASS AMP
HI-ZIn B:
Cue
Stereo Input
29/30
Home
123456789101112
13 2423222120191817161514
Rec/
Play
Menu
Trim
RTA
Anti-
Feedback
Press forfine
Talkback
U3U2
U1 U4
0
U7
U8
Copy
Trim
U6U5
Talk
Trim
WizardInfo
Mic
48V
Aux
Mute
Groups
FX
Trim
Mute
Trim
PhonesMonitor
Paste
Trim TrimTrimTrimTrimTrimTrim TrimTrimTrimTrimTrimTrim
TrimTrimTrimTrimTrimTrim TrimTrimTrimTrimTrimTrim
KW181 Sub
K8.2 ×2
K8.2
LR
1 2
L
3
4 5 6 7
In A
7
1
Preset: LIVE BRIGHT
LINEIn A:
SUB 100 Hz
Preset: STAGE MONITOR 2
LINEIn A:
Preset: STAGE MONITOR 2
LINEIn A:
Preset: STAGE MONITOR 1
LINEIn A:
7
2
4
3
R
K8.2
To in-ear
monitors
Aux Out
Main Out
qsc.com
with
Product
Registration
with
Product
Registration
©2017 QSC, LLC. All rights reserved. QSC and the QSC
logo are registered trademarks of QSC, LLC in the U.S.
Patent and Trademark Office and other countries.
World of K is a trademark of QSC, LLC.
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QSC K12.2 User guide
- Type
- User guide
QSC K12.2 is a 12-inch, 2000-watt powered loudspeaker designed to deliver exceptional sound quality and versatility for a wide range of applications. With its powerful Class-D amplifier, advanced DSP processing, and rugged construction, the K12.2 is ideal for live sound reinforcement, DJing, and playback of recorded music. It features a 12-inch woofer and a 2-inch compression driver, providing a frequency response of 45 Hz to 20 kHz. The K12.
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